Roaming
Roaming
is defined as the ability for a cellular customer to automatically
make & receive voice calls, send & receive data, or
access other services when travelling outside the geographical
coverage area of the home network, by means of using a visited
network.
Roaming is technically supported by mobility management, authentication
and billing procedures. Establishing roaming between network
operators is based on - and the commercial terms are contained
in - Roaming Agreements.
If the visited network is in the same country as the home network,
this is known as National Roaming. If the visited network is
outside the home country, this is known as International Roaming
(the term Global Roaming has also been used).
If the visited network operates on a different technical standard
than the home network, this is known as Inter-standard roaming.
GSM Roaming, which involves roaming between GSM networks, offers
the convenience of a single number, a single bill and a single
phone with worldwide access to over 191 countries. The convenience
of GSM Roaming has been a key driver behind the global success
of the GSM Platform.
GSM Coverage Maps is a unique resource containing information
supplied and approved by the members of the GSM Association.
Network, Services and Roaming information are continually updated
to reflect the evolving situation worldwide. Interactive coverage
maps, updated quarterly, allow you to navigate to see where
exactly you can use your phone.
These definitions are provided simply to help industry discussion
and do not indicate the scope of activities within the GSM Association.
Related
Documents
GSM
Coverage Map
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